As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6342 - IAD-EWR - DURING CRUISE, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO RIGHT HYDRAULIC PRESSURE FLUCTUATION. MAINTENANCE INSPECTED AND REMOVED AND REPLACED HYDRAULIC PRESSURE TRANSMITTER AND OPENED DMI 51753, MEL 29-1. MAINTENANCE CLOSED DMI 51753 ON 9-23-98 BY REMOVING AND REPLACING TRANSMITTER AND PRESSURE INDICATOR. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)